franklin bradley and john smith bradley



(No Model.)

J'. P. 8L J. S. BRADLEY.

PUMP.

No. 467,697. Patented Jan. 26, 1892,.

.s www i abb' UNITED STATES PATENT OFFICE.

JOIIN FRANKLIN BRADLEY AND JOHN SMITII BRADLEY, OF CLARK, MISSOURI.

PUMP.

SPECIFICATION forming part of Letters Patent N'o. 467,697, dated January26, 1892.

Application filed June 24, 1891. Serial No. 397,307. (No model.)

To all whom t may concern:

Be it known that we, JOHN FRANKLIN BRAD- LEY and JOHN SMITH BRADLEY,citizens of the United States, residing at Clark, in the county ofRandolph and Siate of Missouri, have invented a new and useful Pump, ofwhich the following is a specification.

This invention relates to that class of pu Inps which are known asdouble-acting forcingpumps, and has for its object to provide a pump ofthis class which shall be simple in construction, durable, and efficientin operation.

Theinvention consists in the improved construction, arrangement, andcombination of parts, which will be hereinafter fully described, andparticularly pointed out inthe claim.

1n the drawings hereto annexed, Figure l is a perspective view of a pumpconstructed in accordance with our invention. Fig. 2 is averticalsectional view of the same. Fig. 3 is a horizontal sectionalview taken on the line 3 3 of Fig. 2.

Like numerals of reference indicate parts in all the figures.

1 designatesthe cylinder, which is connected with the water-chamber 2 bymeans of tubes 3 3, in which are located the valves 4, opening towardthe cylinder. The water-chamber 2 has the suction-pipe 5, and risingcentrally from the cylinder, which in operation occupies a horizontalposition, is the discharge` pipe G. In the bottoln of the cylinder,directly below the discharge-pipe, is mounted a casing G, containing adirt-valve 7. In the ends of the cylinder are mounted the pistons 8 8,the stems of which extend through the ends of said cylinder and areprovided on their front sides with heads or enlargements 9, connected bya rod 10, which is located in front of and parallel to the cylinder.Jourlike naled in a suitable bearing at the upper endof thedischarge-pipe is a shaft l1, having eccentrics 12 12 and provided atits ends with cranks 13, by means of which it maybe operated. Theeccentrics have the straps 14,

which are connected by means of links lo with the ends of a lever 1G,having a downward-extending arm 17 working in a slot 1S in theconnectingrod lO. It will be seen that when the shaft is rotated areciprocating motion will be imparted to the connecting-rod lO and tothe pistons, thus causing the cylinder to take water and to expelalternately at opposite ends.

Our improved pump, as will be seen from the foregoing description, issimple in coustruction, and it maybe successfully used for all purposesfor which force-pumps are usually employed-such as feeding boilers,drawing Water from wells or cisterns, extinguishing fires, and the like.v Vhen desired the shaft 1l may be provided with a drum or pulleyadapted to receive Inotion from power of any suitable description.

Having thus described our invention, we claim and desire to secure byLetters Patent of the United States- The combination of the cylinderhaving the central supplemental hollow casing, a iiirtvalve locatedwithin said casing, and the pistons on either side of the latter, therod connecting the piston-stems without each end of said cylinder, thedischarge-pipe located above the dirt-valve, the shaft having a bearingat the upper end of the discharge-pipe, the eccentrics upon said shaft,the straps, the links connecting the latter with the ends of a leverpivoted upon the discharge-pipe, an arm extending downwardly upon saidlever and working in a recess or slot in the rod connecting thepiston-stems outside of said cylinder, the tubes connecting the cylinderwith the water-chamber and having valves opening toward the cylinder,and the suction-pipe connected with the water-chamber, subst-aw tiallyas and for the purpose set forth.

In testimony that we claim the foregoing as our own we have heretoaffixed our signatures in presence of two witnesses. V

JOHN FRANKLIN BRADLEY. JOHN SMITH BRADLEY. Witnesses:

O. XV. BARNETT, OLIVER WHITE.

